The fantastic four

Week 9: Beginning of the flowering phase. The Plants are since 3 days in the flowering period. About 3 weeks ago i noticed a slight yellowing of the younger leaves of Euforia. This became more and more intense until additional brown, mosaic-like spots appeared, especially on the younger leaves. After about a week, the other plants also showed their first symptoms. See picture 16. When researching the Internet, the symptoms looked like a manganese deficiency. In addition, I felt that the plants were lacking in nitrogen. This could be seen especially in ImperiumX, which otherwise always had deep green leaves with deep veins and now had more yellowish, green leaves with flat veins. The pH value went towards 7. (cannot be determined so precisely with a color test) The assumption was that the nutrients in the ALL-MIX soil were slowly depleted after 9 weeks. Also found posts on forums where growers had the same problem with pre-fertilized ALL-MIX soil. The nutrients contained last up to about the 10th week. After that, increasing the fertilizer brought an improvement. That's why I adjusted the amount of fertilizer to the LIGHT-MIX soil. This actually just means increasing the GROW fertilizer. From 1ml/l to 2ml/l. That was the solution. The plants became greener again, no more brown spots and growth started again. You could see that very clearly at the ImperiumX in particular. She now has deep green leaves with distinct veins again. Nutrient deficiency was the problem. I must have misunderstood the fertilization scheme. I always thought there was enough fertilizer in the soil for one life cycle. But after 9-10 weeks this is apparently used up. https://www.biobizz.com/wp-content/uploads/2021/06/Nutrient-Schedule-EN_2021-Microbes.pdf Update day 7 of flowering: New pictures. Everything is going well. Plants have no problems. Growing very well and showing early signs of Blossom. Everyone started stretching. Since they had now recovered from the lack of nutrients, I removed a few more leaves. Their high is between 46cm and 58 cm. And Afghan Kush*Skunk surprised me again. She was the last to show signs of nutrient deficiencies and has also recovered the fastest and is bursting with energy again. Light: The light was adjusted to the bloom. Additional warm white and reddish light. The light spectrum is intended to imitate late summer/autumn and give the plants an additional bloom boost. Measured the power consumption of the additional LED modules. Approx. 75 watts. I can't say what percentage of it arrives as light. In any case, I notice a positive effect. Due to the light from the side, the plants all around show good growth and even crowd into the corners of the tent. greeting GroW_o_MaT